fix compile in debug

stepmania/src/crypto/CryptBn.cpp

@@ -860,28 +860,6 @@ unsigned short bignum_mod_short(Bignum number, unsigned short modulus)
 	return (unsigned short) r;
 }
 
-#ifdef DEBUG
-void diagbn(char *prefix, Bignum md)
-{
-	int i, nibbles, morenibbles;
-	static const char hex[] = "0123456789ABCDEF";
-
-	debug(("%s0x", prefix ? prefix : ""));
-
-	nibbles = (3 + bignum_bitcount(md)) / 4;
-	if (nibbles < 1)
-		nibbles = 1;
-	morenibbles = 4 * md[0] - nibbles;
-	for (i = 0; i < morenibbles; i++)
-		debug(("-"));
-	for (i = nibbles; i--;)
-		debug(("%c",
-					hex[(bignum_byte(md, i / 2) >> (4 * (i % 2))) & 0xF]));
-
-	if (prefix)
-		debug(("\n"));
-}
-#endif
 
 /*
  * Simple division.